Western Star 4900EX problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
3 owner complaints analyzed
3 distinct recall campaigns
629,717 mi median reported failure mileage
Scope: 2003 to 2007 model years. Data updated: . 2 complaints include usable failure mileage. View data status.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Engine And Engine Cooling is the most frequently named component, appearing in 1 of 3 complaints (33.3%). A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine And Engine Cooling | 1 |
| Equipment | 1 |
| Structure | 1 |
| Tires | 1 |
Engine And Engine Cooling: 1; Equipment: 1; Structure: 1; Tires: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 2 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 2
150,000 and above miles has the most reports with usable mileage (2). 1 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2009 | 1 |
| 2010 | 1 |
| 2014 | 1 |
2009: 1; 2010: 1; 2014: 1
Pattern summary
Engine And Engine Cooling leads the component reports. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Recalls by model year
All campaigns in the snapshot affecting each model year, including recalls announced years later.
Recall campaigns
Shared campaigns appear once in each affected model year.
| Category | Count |
|---|---|
| 2003 | 1 |
| 2004 | 2 |
| 2006 | 1 |
| 2007 | 1 |
2003: 1; 2004: 2; 2006: 1; 2007: 1
Year-by-year records
Vehicle analysis explorer
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
3 unique complaints in this selection. Analysis snapshot: 2026-10-01.
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
| Component | 2003 | 2004 | 2006 | 2007 |
|---|---|---|---|---|
| Engine And Engine Cooling | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 150.0%ODI 103550812008 STARTED OVERHEATING UNDER A LOAD AND UPHILLS. SEVERAL EGR VALVES, AIR CHARGE COOLERS, TURBOS, FLUSHING AND STEAM CLEANING RADIATOR,HEAD GASKETS, THERMO STATS, AND IT STILL OVERHEATS. WE HAVE CONSULTED WITH WESTERN STAR TO FIND THE PROBLEM AND THEY WILL NO LONGER RETURN OUR CALLS. *TR |
| Equipment | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 1100.0%ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR | 00.0%No examples available for this selection. |
| Structure | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 1100.0%ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR | 00.0%No examples available for this selection. |
| Tires | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 150.0%ODI 10288760 · 269,433 miON MARCH 12, 2009 I BOUGHT 8 SUMITOMO 255/70R22.5 MODEL #ST727 TIRES FOR MY COMMERCIAL TRUCK. APROX. 50K MILES OF USE ONE OF THE TIRES ARE CRACKING FROM THE TOP OF THE TIRE GOING DOWN THE SIDE WALL. I WAS TOLD BY THE RETAILER THAT THE TIRE DID NOT SHOW ANY SIGNS OF IMPACT AND THAT IT IS ONLY A STRESS CRACK AND NOT A DEFECT. *TR |
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
| Component | Mileage range (25th–75th percentile) | Median | Usable records | Examples |
|---|---|---|---|---|
| Equipment | Too few reports for a range | 990,000 mi | 1 (sparse) | ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR |
| Structure | Too few reports for a range | 990,000 mi | 1 (sparse) | ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR |
| Tires | Too few reports for a range | 269,433 mi | 1 (sparse) | ODI 10288760 · 269,433 miON MARCH 12, 2009 I BOUGHT 8 SUMITOMO 255/70R22.5 MODEL #ST727 TIRES FOR MY COMMERCIAL TRUCK. APROX. 50K MILES OF USE ONE OF THE TIRES ARE CRACKING FROM THE TOP OF THE TIRE GOING DOWN THE SIDE WALL. I WAS TOLD BY THE RETAILER THAT THE TIRE DID NOT SHOW ANY SIGNS OF IMPACT AND THAT IT IS ONLY A STRESS CRACK AND NOT A DEFECT. *TR |
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
| Month | Complaints | Campaigns announced | Examples |
|---|---|---|---|
| 2024-11 | 0 | None | No examples available for this selection. |
| 2024-12 | 0 | None | No examples available for this selection. |
| 2025-01 | 0 | None | No examples available for this selection. |
| 2025-02 | 0 | None | No examples available for this selection. |
| 2025-03 | 0 | None | No examples available for this selection. |
| 2025-04 | 0 | None | No examples available for this selection. |
| 2025-05 | 0 | None | No examples available for this selection. |
| 2025-06 | 0 | None | No examples available for this selection. |
| 2025-07 | 0 | None | No examples available for this selection. |
| 2025-08 | 0 | None | No examples available for this selection. |
| 2025-09 | 0 | None | No examples available for this selection. |
| 2025-10 | 0 | None | No examples available for this selection. |
| 2025-11 | 0 | None | No examples available for this selection. |
| 2025-12 | 0 | None | No examples available for this selection. |
| 2026-01 | 0 | None | No examples available for this selection. |
| 2026-02 | 0 | None | No examples available for this selection. |
| 2026-03 | 0 | None | No examples available for this selection. |
| 2026-04 | 0 | None | No examples available for this selection. |
| 2026-05 | 0 | None | No examples available for this selection. |
| 2026-06 | 0 | None | No examples available for this selection. |
| 2026-07 | 0 | None | No examples available for this selection. |
| 2026-08 | 0 | None | No examples available for this selection. |
| 2026-09 | 0 | None | No examples available for this selection. |
| 2026-10 (partial) | 0 | None | No examples available for this selection. |
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2006: 0 complaints · 2007: 2 complaints
| Model year | Through age 0 | Through age 1 | Through age 2 |
|---|---|---|---|
| 2006 | 0 | 0 | 0 |
| 2007 | 0 | 1 | 2 |
Date coverage across each selected cohort
| Year | Incident dates used | Filing date fallbacks | Excluded dates |
|---|---|---|---|
| 2006 | 1 | 0 | 0 |
| 2007 | 2 | 0 | 0 |
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
| Component | Engine And Engine Cooling | Equipment | Structure | Tires |
|---|---|---|---|---|
| Engine And Engine Cooling | — | 0 | 0 | 0 |
| Equipment | 0 | — | 1ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR | 0 |
| Structure | 0 | 1ODI 10558735 · 990,000 miTHE OVERHEAD CONSOLES, WHICH HOUSE MULTIPLE RADIOS, HAVE INSUFFICIENT STRENGTH AND CAUSE THE RADIOS TO FALL ON THE DRIVER WHILE HE WAS DRIVING. *TR | — | 0 |
| Tires | 0 | 0 | 0 | — |
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
0 patterns with matching reports.
No narratives match the published patterns.